Simple, transparent pricing.
Start compressing your prompts for free. Upgrade to Advanced to unlock the Enigma Machine and cross-session learning.
ROI Calculator
Calculate your savings
Based on GPT-4o input pricing at $5 per 1M tokens and an average 22% compression rate.
Tokens saved
11,000
Per day at 22% average compression
Monthly API cost
$7.50
Before Prompty compression
Advanced payback
91 days
$1.65 saved per month
Prompty Free
No credit card required. Never expires.
- Web compressor studio
- Unlimited prompt compressions
- API access + TypeScript SDK
- Universal LLM provider support
- Telemetry dashboard
- No sign-up required to try
- Rosetta Protocol (Enigma codec)
- Domain rotors (React / Node / Python)
- Cross-session agent learning
Prompty Advanced
$36/year — save 40% ($3/mo)
- Everything in Community Plan
- Rosetta Protocol — custom session cipher
- Session codebook applied to every message
- Domain rotors — auto-loads vocab packs
- Sub-agent vocab inheritance
- Cross-session learning (Hall of Fame)
- Compaction-safe reinjection
- Advanced ROI telemetry dashboard
Frequently asked questions
Is Free really free forever?
Yes. Phrase compression, API access, and the usage dashboard stay free with no credit card and no expiry. We mean it.
What does Advanced add on top of Free?
The Rosetta Protocol — a negotiated session cipher. At session start, a codebook is built from your project vocabulary. Every message is then compressed using that cipher. Advanced also includes domain rotors and cross-session learning.
Does compression affect AI response quality?
No. We prepend a tiny decoder header that teaches the LLM our abbreviations. The AI understands the compressed prompt perfectly. For prompts under 30 words, we skip compression entirely to ensure 100% accuracy.
Do you store my prompts?
Never. We only store word counts, compression ratios, and usage statistics. Your prompts are processed in-memory and immediately discarded. Deploy in a TEE for cryptographic proof.